Tracy Anderson: What's In My Bag?

Tracy Anderson is keeps snacks and toys for 16-month-old Penelope in a Chanel tote, a present from client and business partner Gwyneth Paltrow. "She always gives 'wow' gifts," says the pro, who also works withJennifer Lopez and Nicole Richie. What's she packing?

Bottoms Up!

"I worry about getting stuck somewhere without water for Penny or my 15-year-old son, Sam. It's a weird concern of mine. So I carry Alka-Pi water, even though my friends make fun of me for lugging heavy bottles everywhere."

"I love Stefan Sagmeister's photo book Things I Have Learned in My Life So Far. He's a graphic designer who makes living-art displays that spell out phrases like WORRYING SOLVES NOTHING. The messages inspire me."